Merge branch 'ipcomp'

Fixes compatibility issues between firewall rules (leftfirewall=yes)
and IPComp (compress=yes), plus issues with IPComp when used with
multiple subnets in left|rightsubnet.

Fixes #436.

src/_updown/_updown.in

@@ -50,6 +50,9 @@
 #       PLUTO_PROTO
 #              is the negotiated IPsec protocol, ah|esp
 #
+#       PLUTO_IPCOMP
+#              is not empty if IPComp was negotiated
+#
 #       PLUTO_UNIQUEID
 #              is the unique identifier of the associated IKE_SA
 #
@@ -411,6 +414,14 @@ up-host:iptables)
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
+	# allow IPIP traffic because of the implicit SA created by the kernel if
+	# IPComp is used (for small inbound packets that are not compressed)
+	if [ -n "$PLUTO_IPCOMP" ]
+	then
+	  iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
+	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+	fi
+	#
 	# log IPsec host connection setup
 	if [ $VPN_LOGGING ]
 	then
@@ -435,6 +446,13 @@ down-host:iptables)
 	    -s $PLUTO_ME $S_MY_PORT $IPSEC_POLICY_OUT \
 	    -d $PLUTO_PEER_CLIENT $D_PEER_PORT -j ACCEPT
 	#
+	# IPIP exception teardown
+	if [ -n "$PLUTO_IPCOMP" ]
+	then
+	  iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
+	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+	fi
+	#
 	# log IPsec host connection teardown
 	if [ $VPN_LOGGING ]
 	then
@@ -474,6 +492,15 @@ up-client:iptables)
 	      -d $PLUTO_PEER_CLIENT $D_PEER_PORT $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
+	# allow IPIP traffic because of the implicit SA created by the kernel if
+	# IPComp is used (for small inbound packets that are not compressed).
+	# INPUT is correct here even for forwarded traffic.
+	if [ -n "$PLUTO_IPCOMP" ]
+	then
+	  iptables -I INPUT 1 -i $PLUTO_INTERFACE -p 4 \
+	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+	fi
+	#
 	# log IPsec client connection setup
 	if [ $VPN_LOGGING ]
 	then
@@ -517,6 +544,13 @@ down-client:iptables)
 	         $IPSEC_POLICY_OUT -j ACCEPT
 	fi
 	#
+	# IPIP exception teardown
+	if [ -n "$PLUTO_IPCOMP" ]
+	then
+	  iptables -D INPUT -i $PLUTO_INTERFACE -p 4 \
+	      -s $PLUTO_PEER -d $PLUTO_ME $IPSEC_POLICY_IN -j ACCEPT
+	fi
+	#
 	# log IPsec client connection teardown
 	if [ $VPN_LOGGING ]
 	then

src/libcharon/plugins/updown/updown_listener.c

@@ -1,4 +1,5 @@
 /*
+ * Copyright (C) 2013 Tobias Brunner
  * Copyright (C) 2008 Martin Willi
  * Hochschule fuer Technik Rapperswil
  *
@@ -218,12 +219,12 @@ METHOD(listener_t, child_updown, bool,
 	enumerator = child_sa->create_policy_enumerator(child_sa);
 	while (enumerator->enumerate(enumerator, &my_ts, &other_ts))
 	{
-		char command[1024];
+		char command[2048];
 		host_t *my_client, *other_client;
 		u_int8_t my_client_mask, other_client_mask;
 		char *virtual_ip, *iface, *mark_in, *mark_out, *udp_enc, *dns, *xauth;
 		mark_t mark;
-		bool is_host, is_ipv6;
+		bool is_host, is_ipv6, use_ipcomp;
 		FILE *shell;
 
 		my_ts->to_subnet(my_ts, &my_client, &my_client_mask);
@@ -322,6 +323,9 @@ METHOD(listener_t, child_updown, bool,
 
 		dns = make_dns_vars(this, ike_sa);
 
+		/* check for IPComp */
+		use_ipcomp = child_sa->get_ipcomp(child_sa) != IPCOMP_NONE;
+
 		/* determine IPv4/IPv6 and client/host situation */
 		is_host = my_ts->is_host(my_ts, me);
 		is_ipv6 = is_host ? (me->get_family(me) == AF_INET6) :
@@ -355,6 +359,7 @@ METHOD(listener_t, child_updown, bool,
 				"%s"
 				"%s"
 				"%s"
+				"%s"
 				"%s",
 				 up ? "up" : "down",
 				 is_host ? "-host" : "-client",
@@ -377,6 +382,7 @@ METHOD(listener_t, child_updown, bool,
 				 mark_in,
 				 mark_out,
 				 udp_enc,
+				 use_ipcomp ? "PLUTO_IPCOMP='1' " : "",
 				 config->get_hostaccess(config) ? "PLUTO_HOST_ACCESS='1' " : "",
 				 dns,
 				 script);

src/libhydra/plugins/kernel_netlink/kernel_netlink_ipsec.c

@@ -1203,6 +1203,7 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
 	struct nlmsghdr *hdr;
 	struct xfrm_usersa_info *sa;
 	u_int16_t icv_size = 64;
+	ipsec_mode_t original_mode = mode;
 	status_t status = FAILED;
 
 	/* if IPComp is used, we install an additional IPComp SA. if the cpi is 0
@@ -1213,7 +1214,7 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
 		add_sa(this, src, dst, htonl(ntohs(cpi)), IPPROTO_COMP, reqid, mark,
 			   tfc, &lft, ENCR_UNDEFINED, chunk_empty, AUTH_UNDEFINED,
 			   chunk_empty, mode, ipcomp, 0, initiator, FALSE, FALSE, inbound,
-			   NULL, NULL);
+			   src_ts, dst_ts);
 		ipcomp = IPCOMP_NONE;
 		/* use transport mode ESP SA, IPComp uses tunnel mode */
 		mode = MODE_TRANSPORT;
@@ -1243,7 +1244,12 @@ METHOD(kernel_ipsec_t, add_sa, status_t,
 			break;
 		case MODE_BEET:
 		case MODE_TRANSPORT:
-			if(src_ts && dst_ts)
+			if (original_mode == MODE_TUNNEL)
+			{	/* don't install selectors for switched SAs.  because only one
+				 * selector can be installed other traffic would get dropped */
+				break;
+			}
+			if (src_ts && dst_ts)
 			{
 				sa->sel = ts2selector(src_ts, dst_ts);
 				/* don't install proto/port on SA. This would break

testing/tests/ikev2/compress-nat/description.txt

@@ -0,0 +1,3 @@
+The peers <b>alice</b> and <b>bob</b> are located behind the NAT routers <b>moon</b> and <b>sun</b>,
+respectively. They both connect to a central gateway <b>carol</b> using IPComp.
+In order to test the IPsec tunnel both peers ping each other and gateway <b>carol</b>.

testing/tests/ikev2/compress-nat/evaltest.dat

@@ -0,0 +1,22 @@
+alice::ipsec status 2> /dev/null::hub.*ESTABLISHED.*alice@strongswan.org.*carol@strongswan.org::YES
+bob::  ipsec status 2> /dev/null::hub.*ESTABLISHED.*bob@strongswan.org.*carol@strongswan.org::YES
+carol::ipsec status 2> /dev/null::hub.*ESTABLISHED.*PH_IP_MOON.*alice@strongswan.org::YES
+carol::ipsec status 2> /dev/null::hub.*ESTABLISHED.*PH_IP_SUN.*bob@strongswan.org::YES
+alice::ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+bob::  ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+carol::ipsec status 2> /dev/null::hub.*INSTALLED, TUNNEL.*IPCOMP::YES
+carol::cat /var/log/daemon.log::IKE_AUTH request.*N(IPCOMP_SUP)::YES
+carol::cat /var/log/daemon.log::IKE_AUTH response.*N(IPCOMP_SUP)::YES
+alice::ip xfrm state::proto comp spi::YES
+bob::  ip xfrm state::proto comp spi::YES
+carol::ip xfrm state::proto comp spi::YES
+alice::ping -c 1 -s 8184 -p deadbeef PH_IP_CAROL::8192 bytes from PH_IP_CAROL: icmp_req=1::YES
+alice::ping -c 1 PH_IP_CAROL::64 bytes from PH_IP_CAROL: icmp_req=1::YES
+alice::ping -c 1 -s 8184 -p deadbeef PH_IP_BOB::8192 bytes from PH_IP_BOB: icmp_req=1::YES
+alice::ping -c 1 PH_IP_BOB::64 bytes from PH_IP_BOB: icmp_req=1::YES
+bob::  ping -c 1 -s 8184 -p deadbeef PH_IP_ALICE::8192 bytes from PH_IP_ALICE: icmp_req=1::YES
+bob::  ping -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE: icmp_req=1::YES
+moon::tcpdump::IP moon.strongswan.org.* > carol.strongswan.org.*: UDP::YES
+moon::tcpdump::IP carol.strongswan.org.* > moon.strongswan.org.*: UDP::YES
+sun::tcpdump::IP sun.strongswan.org.* > carol.strongswan.org.*: UDP::YES
+sun::tcpdump::IP carol.strongswan.org.* > sun.strongswan.org.*: UDP::YES

testing/tests/ikev2/compress-nat/hosts/alice/etc/ipsec.conf

@@ -0,0 +1,24 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=restart
+	dpddelay=60s
+	leftfirewall=yes
+	lefthostaccess=yes
+
+conn hub
+	leftcert=aliceCert.pem
+	leftid=alice@strongswan.org
+	leftsubnet=10.1.0.0/16
+	right=PH_IP_CAROL
+	rightid=carol@strongswan.org
+	rightsubnet=PH_IP_CAROL/32,10.2.0.0/16
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/alice/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/hosts/bob/etc/ipsec.conf

@@ -0,0 +1,24 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=restart
+	dpddelay=60s
+	leftfirewall=yes
+	lefthostaccess=yes
+
+conn hub
+	leftcert=bobCert.pem
+	leftid=bob@strongswan.org
+	leftsubnet=10.2.0.0/16
+	right=PH_IP_CAROL
+	rightid=carol@strongswan.org
+	rightsubnet=PH_IP_CAROL/32,10.1.0.0/16
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/bob/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/hosts/carol/etc/ipsec.conf

@@ -0,0 +1,23 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	dpdaction=clear
+	dpddelay=60s
+
+conn hub
+	leftcert=carolCert.pem
+	leftid=carol@strongswan.org
+	leftfirewall=yes
+	lefthostaccess=yes
+	right=%any
+	leftsubnet=0.0.0.0/0
+	rightsubnet=0.0.0.0/0
+	compress=yes
+	auto=add

testing/tests/ikev2/compress-nat/hosts/carol/etc/iptables.rules

@@ -0,0 +1,24 @@
+*filter
+
+# default policy is DROP
+-P INPUT DROP
+-P OUTPUT DROP
+-P FORWARD DROP
+
+# allow IKE
+-A INPUT  -i eth0 -p udp --dport 500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT
+
+# allow MobIKE
+-A INPUT  -i eth0 -p udp --dport 4500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT
+
+# allow ssh
+-A INPUT  -p tcp --dport 22 -j ACCEPT
+-A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+# allow crl fetch from winnetou
+-A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+COMMIT

testing/tests/ikev2/compress-nat/hosts/carol/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ikev2/compress-nat/posttest.dat

@@ -0,0 +1,10 @@
+bob::ipsec stop
+alice::ipsec stop
+carol::ipsec stop
+alice::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+bob::iptables-restore < /etc/iptables.flush
+moon::iptables-restore < /etc/iptables.flush
+sun::iptables-restore < /etc/iptables.flush
+moon::conntrack -F
+sun::conntrack -F

testing/tests/ikev2/compress-nat/pretest.dat

@@ -0,0 +1,21 @@
+alice::iptables-restore < /etc/iptables.rules
+carol::iptables-restore < /etc/iptables.rules
+bob::iptables-restore < /etc/iptables.rules
+moon::iptables-restore < /etc/iptables.rules
+sun::iptables-restore < /etc/iptables.rules
+moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p udp -j SNAT --to-source PH_IP_MOON:1100-1200
+moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -p tcp -j SNAT --to-source PH_IP_MOON:2000-2100
+moon::iptables -A FORWARD -i eth1 -o eth0 -s 10.1.0.0/16  -j ACCEPT
+moon::iptables -A FORWARD -i eth0 -o eth1 -d 10.1.0.0/16  -j ACCEPT
+sun::iptables -t nat -A POSTROUTING -o eth0 -s 10.2.0.0/16 -p udp -j SNAT --to-source PH_IP_SUN:1200-1300
+sun::iptables -t nat -A POSTROUTING -o eth0 -s 10.2.0.0/16 -p tcp -j SNAT --to-source PH_IP_SUN:2000-2100
+sun::iptables -A FORWARD -i eth1 -o eth0 -s 10.2.0.0/16 -j ACCEPT
+sun::iptables -A FORWARD -i eth0 -o eth1 -d 10.2.0.0/16 -j ACCEPT
+carol::ipsec start
+alice::ipsec start
+bob::ipsec start
+carol::expect-connection hub
+alice::expect-connection hub
+bob::expect-connection hub
+alice::ipsec up hub
+bob::ipsec up hub

testing/tests/ikev2/compress-nat/test.conf

@@ -0,0 +1,21 @@
+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou sun bob"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w-s-b-med.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon sun"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="alice carol bob"

testing/tests/ikev2/compress/description.txt

@@ -1,3 +1,4 @@
-This scenario enables IPCOMP compression between roadwarrior <b>carol</b> and
+This scenario enables IPComp compression between roadwarrior <b>carol</b> and
-gateway <b>moon</b>. Two pings from <b>carol</b> to <b>alice</b> checks
+gateway <b>moon</b>. Two pings from <b>carol</b> to <b>alice</b> check
-the established tunnel with compression.
+the established tunnel with compression. The packet sizes of the two pings
+are different because the kernel does not compress small packets.

testing/tests/ikev2/compress/evaltest.dat

@@ -6,7 +6,7 @@ moon:: cat /var/log/daemon.log::IKE_AUTH request.*N(IPCOMP_SUP)::YES
 moon:: cat /var/log/daemon.log::IKE_AUTH response.*N(IPCOMP_SUP)::YES
 moon:: ip xfrm state::proto comp spi::YES
 carol::ip xfrm state::proto comp spi::YES
-carol::ping -n -c 2 -s 8184 -p deadbeef PH_IP_ALICE::8192 bytes from PH_IP_ALICE::YES
+carol::ping -n -c 1 -s 8184 -p deadbeef PH_IP_ALICE::8192 bytes from PH_IP_ALICE::YES
+carol::ping -n -c 1 PH_IP_ALICE::64 bytes from PH_IP_ALICE::YES
 moon::tcpdump::carol.strongswan.org > moon.strongswan.org: ESP::YES
 moon::tcpdump::moon.strongswan.org >  carol.strongswan.org: ESP::YES
-

testing/tests/ikev2/compress/hosts/carol/etc/ipsec.conf

@@ -9,6 +9,7 @@ conn %default
 	keyingtries=1
 	keyexchange=ikev2
 	compress=yes
+	leftfirewall=yes
 
 conn home
 	left=PH_IP_CAROL

testing/tests/ikev2/compress/hosts/carol/etc/strongswan.conf

@@ -1,5 +1,5 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 charon {
-  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
 }

testing/tests/ikev2/compress/hosts/moon/etc/ipsec.conf

@@ -9,6 +9,7 @@ conn %default
 	keyingtries=1
 	keyexchange=ikev2
 	compress=yes
+	leftfirewall=yes
 
 conn rw
 	left=PH_IP_MOON

testing/tests/ikev2/compress/hosts/moon/etc/strongswan.conf

@@ -1,5 +1,5 @@
 # /etc/strongswan.conf - strongSwan configuration file
 
 charon {
-  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
 }

testing/tests/ikev2/compress/posttest.dat

@@ -1,2 +1,4 @@
 moon::ipsec stop
 carol::ipsec stop
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush

testing/tests/ikev2/compress/pretest.dat

@@ -1,3 +1,5 @@
+carol::iptables-restore < /etc/iptables.rules
+moon::iptables-restore < /etc/iptables.rules
 carol::ipsec start
 moon::ipsec start
 carol::sleep 2

testing/tests/ikev2/host2host-transport-nat/description.txt

@@ -0,0 +1,13 @@
+An IPsec <b>transport-mode</b> connection between the natted host <b>alice</b> and gateway <b>sun</b>
+is successfully set up. <b>leftfirewall=yes</b> automatically inserts iptables-based firewall
+rules that let pass the decrypted IP packets. In order to test the host-to-host connection
+<b>alice</b> pings <b>sun</b>.<br/>
+<b>Note:</b> This scenario also demonstrates two problems with transport-mode and NAT traversal:
+<ol>
+<li>The client <b>venus</b> behind the same NAT as client <b>alice</b> is not able to ping <b>sun</b>
+(even with ICMP explicitly allowed there) because the request arrives unencrypted and thus gets
+dropped when the IPsec policies are consulted (increases the <em>XfrmInTmplMismatch</em> counter
+in <em>/proc/net/xfrm_stat</em>).</li>
+<li>A similar issue arises when <b>venus</b> also establishes an IPsec <b>transport-mode</b> connection to
+<b>sun</b>, due to the conflicting IPsec policies <b>sun</b> declines such a connection.</li>
+</ol>

testing/tests/ikev2/host2host-transport-nat/evaltest.dat

@@ -0,0 +1,12 @@
+alice::ipsec status 2> /dev/null::nat-t.*ESTABLISHED.*alice@strongswan.org.*sun.strongswan.org::YES
+sun:: ipsec status 2> /dev/null::nat-t.*ESTABLISHED.*sun.strongswan.org.*alice@strongswan.org::YES
+alice::ipsec status 2> /dev/null::nat-t.*INSTALLED, TRANSPORT::YES
+sun:: ipsec status 2> /dev/null::nat-t.*INSTALLED, TRANSPORT::YES
+alice::ping -c 1 PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_req=1::YES
+venus::ping -c 1 -W 1 PH_IP_SUN::64 bytes from PH_IP_SUN: icmp_req=1::NO
+venus::ipsec up nat-t::received TS_UNACCEPTABLE notify::YES
+sun::cat /var/log/daemon.log::unable to install policy::YES
+sun::tcpdump::IP moon.strongswan.org.* > sun.strongswan.org.*: UDP::YES
+sun::tcpdump::IP sun.strongswan.org.* > moon.strongswan.org.*: UDP::YES
+sun::tcpdump::IP moon.strongswan.org > sun.strongswan.org: ICMP echo request::YES
+sun::tcpdump::IP sun.strongswan.org > moon.strongswan.org: ICMP echo reply::NO

testing/tests/ikev2/host2host-transport-nat/hosts/alice/etc/ipsec.conf

@@ -0,0 +1,18 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+
+conn nat-t
+	leftcert=aliceCert.pem
+	leftid=alice@strongswan.org
+	leftfirewall=yes
+	right=192.168.0.2
+	rightid=@sun.strongswan.org
+	type=transport
+	auto=add

testing/tests/ikev2/host2host-transport-nat/hosts/sun/etc/ipsec.conf

@@ -0,0 +1,18 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	left=192.168.0.2
+	leftcert=sunCert.pem
+	leftid=@sun.strongswan.org
+	leftfirewall=yes
+
+conn nat-t
+	right=%any
+	type=transport
+	auto=add

testing/tests/ikev2/host2host-transport-nat/hosts/sun/etc/iptables.rules

@@ -0,0 +1,28 @@
+*filter
+
+# default policy is DROP
+-P INPUT DROP
+-P OUTPUT DROP
+-P FORWARD DROP
+
+# allow IKE
+-A INPUT  -i eth0 -p udp --dport 500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 500 -j ACCEPT
+
+# allow MobIKE
+-A INPUT  -i eth0 -p udp --dport 4500 -j ACCEPT
+-A OUTPUT -o eth0 -p udp --sport 4500 -j ACCEPT
+
+# allow ssh
+-A INPUT  -p tcp --dport 22 -j ACCEPT
+-A OUTPUT -p tcp --sport 22 -j ACCEPT
+
+# allow crl fetch from winnetou
+-A INPUT  -i eth0 -p tcp --sport 80 -s PH_IP_WINNETOU -j ACCEPT
+-A OUTPUT -o eth0 -p tcp --dport 80 -d PH_IP_WINNETOU -j ACCEPT
+
+# allow ICMP
+-A INPUT  -i eth0 -p icmp -j ACCEPT
+-A OUTPUT -o eth0 -p icmp -j ACCEPT
+
+COMMIT

testing/tests/ikev2/host2host-transport-nat/hosts/venus/etc/ipsec.conf

@@ -0,0 +1,18 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+
+conn nat-t
+	leftcert=venusCert.pem
+	leftid=venus@strongswan.org
+	leftfirewall=yes
+	right=192.168.0.2
+	rightid=@sun.strongswan.org
+	type=transport
+	auto=add

testing/tests/ikev2/host2host-transport-nat/posttest.dat

@@ -0,0 +1,6 @@
+alice::ipsec stop
+venus::ipsec stop
+sun::ipsec stop
+alice::iptables-restore < /etc/iptables.flush
+moon::iptables-restore < /etc/iptables.flush
+sun::iptables-restore < /etc/iptables.flush

testing/tests/ikev2/host2host-transport-nat/pretest.dat

@@ -0,0 +1,12 @@
+alice::iptables-restore < /etc/iptables.rules
+moon::iptables-restore < /etc/iptables.rules
+sun::iptables-restore < /etc/iptables.rules
+moon::iptables -t nat -A POSTROUTING -o eth0 -s 10.1.0.0/16 -j MASQUERADE
+moon::iptables -A FORWARD -i eth1 -o eth0 -s 10.1.0.0/16  -j ACCEPT
+moon::iptables -A FORWARD -i eth0 -o eth1 -d 10.1.0.0/16  -j ACCEPT
+alice::ipsec start
+venus::ipsec start
+sun::ipsec start
+alice::expect-connection nat-t
+venus::expect-connection nat-t
+alice::ipsec up nat-t

testing/tests/ikev2/host2host-transport-nat/test.conf

@@ -0,0 +1,21 @@
+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon winnetou sun"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-w-s-b.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="sun alice venus moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="alice venus sun"

testing/tests/ipv6/rw-compress-ikev2/description.txt

@@ -0,0 +1,10 @@
+This scenario enables IPComp compression between roadwarrior <b>carol</b> and
+gateway <b>moon</b>. Two IPv6 ICMP requests from <b>carol</b> to <b>alice</b>
+check the established tunnel with compression. The packet sizes are different
+because the kernel does not compress small packets.<br/>
+<b>Note:</b> The kernel applies IPComp after fragmenting the original packet
+according to the MTU. Also, because <b>alice</b> does not know about the IPsec
+tunnel between <b>moon</b> and <b>carol</b> the response to the first ICMP
+request is fragmented in too large fragments and <b>moon</b> sends back ICMPs
+with type 2 to notify <b>alice</b> about this (Path MTU Discovery).
+The second ping is then answered successfully.

testing/tests/ipv6/rw-compress-ikev2/evaltest.dat

@@ -0,0 +1,13 @@
+carol::ipsec status 2> /dev/null::home.*ESTABLISHED.*carol@strongswan.org.*moon.strongswan.org::YES
+moon:: ipsec status 2> /dev/null::rw.*ESTABLISHED.*moon.strongswan.org.*carol@strongswan.org::YES
+carol::ipsec status 2> /dev/null::home.*INSTALLED, TUNNEL.*IPCOMP::YES
+moon:: ipsec status 2> /dev/null::rw.*INSTALLED, TUNNEL.*IPCOMP::YES
+moon:: cat /var/log/daemon.log::IKE_AUTH request.*N(IPCOMP_SUP)::YES
+moon:: cat /var/log/daemon.log::IKE_AUTH response.*N(IPCOMP_SUP)::YES
+moon:: ip xfrm state::proto comp spi::YES
+carol::ip xfrm state::proto comp spi::YES
+# send two pings because the first is lost due to Path MTU Discovery between alice and moon
+carol::ping6 -c 2 -W 1 -s 8184 -p deadbeef ip6-alice.strongswan.org::8192 bytes from ip6-alice.strongswan.org::YES
+carol::ping6 -c 1 ip6-alice.strongswan.org::64 bytes from ip6-alice.strongswan.org::YES
+moon::tcpdump::IP6 ip6-carol.strongswan.org > ip6-moon.strongswan.org: ESP::YES
+moon::tcpdump::IP6 ip6-moon.strongswan.org > ip6-carol.strongswan.org: ESP::YES

testing/tests/ipv6/rw-compress-ikev2/hosts/carol/etc/ipsec.conf

@@ -0,0 +1,25 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+ca strongswan
+	cacert=strongswanCert.pem
+	crluri=http://ip6-winnetou.strongswan.org/strongswan.crl
+	auto=add
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	compress=yes
+	leftfirewall=yes
+
+conn home
+	leftcert=carolCert.pem
+	leftid=carol@strongswan.org
+	right=PH_IP6_MOON
+	rightsubnet=fec1::/16
+	rightid=@moon.strongswan.org
+	auto=add

testing/tests/ipv6/rw-compress-ikev2/hosts/carol/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ipv6/rw-compress-ikev2/hosts/moon/etc/ipsec.conf

@@ -0,0 +1,24 @@
+# /etc/ipsec.conf - strongSwan IPsec configuration file
+
+config setup
+
+ca strongswan
+	cacert=strongswanCert.pem
+	crluri=http://ip6-winnetou.strongswan.org/strongswan.crl
+	auto=add
+
+conn %default
+	ikelifetime=60m
+	keylife=20m
+	rekeymargin=3m
+	keyingtries=1
+	keyexchange=ikev2
+	compress=yes
+	leftfirewall=yes
+
+conn rw
+	leftcert=moonCert.pem
+	leftid=@moon.strongswan.org
+	leftsubnet=fec1::/16
+	right=%any
+	auto=add

testing/tests/ipv6/rw-compress-ikev2/hosts/moon/etc/strongswan.conf

@@ -0,0 +1,5 @@
+# /etc/strongswan.conf - strongSwan configuration file
+
+charon {
+  load = curl aes des sha1 sha2 md5 pem pkcs1 gmp random nonce x509 revocation hmac xcbc stroke kernel-netlink socket-default updown
+}

testing/tests/ipv6/rw-compress-ikev2/posttest.dat

@@ -0,0 +1,8 @@
+moon::ipsec stop
+carol::ipsec stop
+moon::iptables-restore < /etc/iptables.flush
+carol::iptables-restore < /etc/iptables.flush
+moon::ip6tables-restore < /etc/ip6tables.flush
+carol::ip6tables-restore < /etc/ip6tables.flush
+alice::"ip route del fec0:\:/16 via fec1:\:1"
+carol::"ip route del fec1:\:/16 via fec0:\:1"

testing/tests/ipv6/rw-compress-ikev2/pretest.dat

@@ -0,0 +1,13 @@
+moon::iptables-restore < /etc/iptables.drop
+carol::iptables-restore < /etc/iptables.drop
+moon::ip6tables-restore < /etc/ip6tables.rules
+carol::ip6tables-restore < /etc/ip6tables.rules
+# enable Path MTU Discovery
+moon::ip6tables -I OUTPUT 1 -o eth1 -p icmpv6 --icmpv6-type 2 -j ACCEPT
+alice::"ip route add fec0:\:/16 via fec1:\:1"
+carol::"ip route add fec1:\:/16 via fec0:\:1"
+moon::ipsec start
+carol::ipsec start
+moon::expect-connection rw
+carol::expect-connection home
+carol::ipsec up home

testing/tests/ipv6/rw-compress-ikev2/test.conf

@@ -0,0 +1,22 @@
+#!/bin/bash
+#
+# This configuration file provides information on the
+# guest instances used for this test
+
+# All guest instances that are required for this test
+#
+VIRTHOSTS="alice moon carol winnetou"
+
+# Corresponding block diagram
+#
+DIAGRAM="a-m-c-w-ip6.png"
+
+# Guest instances on which tcpdump is to be started
+#
+TCPDUMPHOSTS="moon"
+
+# Guest instances on which IPsec is started
+# Used for IPsec logging purposes
+#
+IPSECHOSTS="moon carol"
+